package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.Setmeal;
import com.itheima.reggie.entity.SetmealDish;
import com.itheima.reggie.mapper.CategoryMapper;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishService;
import com.itheima.reggie.service.SetmealService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Slf4j
@Service
public class CategoryServiceImpl extends ServiceImpl<CategoryMapper, Category> implements CategoryService {
    @Autowired
    private DishService dishService;
    @Autowired
    private SetmealService setmealService;

    @Override
    public void remove(Long id) {
        LambdaQueryWrapper<Dish> lqw = new LambdaQueryWrapper<>();
        lqw.eq(Dish::getCategoryId,id);
        int count = dishService.count(lqw);
        if (count>0){
            //抛异常
            throw new CustomException("已经关联菜品，不能删除");
        }

        LambdaQueryWrapper<Setmeal> lqw1 = new LambdaQueryWrapper<>();
        lqw1.eq(Setmeal::getCategoryId,id);
        int count1 = setmealService.count(lqw1);
        if (count1>0){
            //抛异常
            throw new CustomException("已经关联套餐，不能删除");
        }

        removeById(id);
    }


}
